Improvement in call-bells



UNITED. STATES PATENT FETCE.

wEsrEL E. HAwxiNs AND GUEnoN wziHULt, or wALLINeEoED, ooNN.

IMPRVMENT IN CALLH'BELLS.

Specioation forming part of Letters Patent No. 159,411, dated February 2, 1875 application filed January 7, 1875.

To all whom it may concern:

Be it known that we, WESTEL E. HAW- KINs and GURDoN W. HULL, of Wallingford, in the county of New Haven and State of Connecticut, have invented a new Gall-Bell; and we do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

-Figure l, side view; Fig. 2, vertical section Fig. 3, vertical section at right angles to section in Fig. 2; Fig. 4, plan of the operation, machine at right angles to section in Fig. 2.

This invention relates to anl improvement in that class of call-bells in which the bell is held upon a stationary column or base, and the hammer caused to swing to strike the bell; and the invention consists in a hammer or hammers pivoted to the column or bellsupport,'combined with a rocking lever, one arm of which extends outward from the column or support, as a means for turning or swinging the hammer or hammers, as more fully hereinafter described.

A is the bell, secured to the column or support B in the usual manner. To the column B the hammers (l C are hung upon a pivot, a, and so as to swing freely thereon. Their position relative to each other and to the bell is such that, in swinging, one hammer will strike the column B,'or some other convenient stop, before the other hammer quite reaches the bell, as seen in broken lines, Fig.

Hence, if the hammer be swung with considerable force, the momentum of the free hammer, owing to the elasticity of its arm, will carry it to the bell after the other arm has stopped, and hence give the required blow to the bell, and instantly fall back by the reaction of the arm; hence neither hammer can rest in contact with the bell.

In substantially a vertical line with the axis of the hammer, and beneath the bell, aV

rocking lever, D, is hung, as at d, the axis of the lever and of the hammer being substantially parallel. The free end of this lever D Ais forked, and into the fork an arm, e, ex-

tends from the hub of the hammer; or the y hub may be forked, and the end of the lever extend into that, it being essential that there be a connection between the two.

From the lever D an arm, E, turns to the right or left into a convenient position below the bell for applying the finger to impart a rocking or vibrating movement to the lever. This is best done by making the arm E a shaft extending through the column or support, the ends extending, respectively, to the right and left, and each end terminating in a finger-piece, F-the lever D firmly attached to or made a part of the shaft. In this case the ends of the arms should be turned one to the right and the other to the left, as seen in Fig. 4; hence a depression upon one side will strike one hammer against the bell, and-upon the other side will strike the other hammer.

A single hammer, however, may be employed; but in that case a stop equivalent to that produced by the second hammer must be provided. In this case the two inger-pieces must both turn the same way. A single nger-piece or extension of the lever to one side only will answer the purpose; but two are more convenient, for obvious reasons.

In case of the single arm and two hammers, the single arm may have two branches, as denoted in broken lines, Fig. 4.

We claim as our invention, and desire to secure by Letters Patent- 1. The combination, with a fixed bell, of one or more hammers, C, arranged to swing in a plane substantially at right angles with the plane of the rim of the bell, a lever. D, the the axis of which is substantially parallel to the axis of the hammer, and in connection with the hub of the hammer, and an arm of said lever below the bell turned to one side of the axial lineof said lever, these elements operating substantially as described.

`2. The combination of a xed bell, one or more hammers, C, the lever D, in connection with the hub of the hammer, substantially as described, and a stop to arrest the turning of the hub of the hammer before the hammer strikes the bell, substantially as described.

. W. E. HAWKINS. G. W. HULL.' Witnesses:

` C. G. PoMERoY, C. H. BARBER. 

